COMPATIBILITY: The upgrade bathroom sink stopper fits 99% drain holes, it is suitable for inner diameter of 1.1-1.5inch. It can be used for wash basin, tub, bathroom or bathtub and so on. BUILD-IN STRAINER: The sink drain stopper has an anti-clogging basket strainer inside,it can effectively prevent the drain from clogging up,such as hairs, bracelet, tea leaves or ring. HIGH QUALITY: The bathtub stopper is made of quality stainless steel and brass.It doesn't rust and is durable. EASY TO INSTALL AND & CLEAN: Easy to install--No tools are needed,just take out the old one and put the new pop up drain stopper in the drainage hole;Easy to clean--Just gently rotate the bounce cover and take out the bounce core, easily clean up hair. BOUNCE BULLET CORE PUSH TYPE: Built-in spring,it can quickly seal and stop draining when you press it gently.It is equipped with 2 rubber rings, seamlessly matched with the drain pipe, which can effectively prevent water leakage.